Ferroelectric semiconductors with bulk photovoltaic effect (BPVE) have been widely studied as effective media for photovoltaic non-volatile data storage. However, the application of traditional ferroelectric materials in this field is still plagued by problems such as large band gap, high internal resistance, poor carrier transport, and easy polarization fatigue. In recent years, the emerging organic-inorganic hybrid perovskite ferroelectric materials have shown broad prospects in the development of new ferroelectric materials suitable for the field of photovoltaic non-volatile storage due to the combination of excellent ferroelectricity and semiconductor properties. On the basis of previous research, Luo Junhua’s team, a researcher at the State Key Laboratory of Structural Chemistry, Fujian Institute of the Structure of Matter, Chinese Academy of Sciences, designed and synthesized a new type of layered hybrid perovskite ferroelectric semiconductor by developing a strategy of "structural element replacement" (C6H5CH2NH3)2CsPb2Br7, and applied this material system to the research of photovoltaic non-volatile memory for the first time. The study found that the crystal device of this compound exhibits photovoltaic current highly correlated with the direction of iron polarization (photovoltaic current density and switching ratio reach 5 μA/cm2 and 3×105, respectively), which is important for the preparation of photovoltaic nonvolatile memory significance. In addition, the compound also exhibits strong anti-fatigue properties. Its spontaneous polarization strength and photovoltaic open circuit voltage can remain stable after 108 polarization cycles, which makes the compound-based nonvolatile memory The parts show advantages in stability and durability. Considering the scalability of the hybrid perovskite structure, this research makes it possible to design more fatigue-free ferroelectric semiconductors and will further expand the potential applications of such materials in the field of non-volatile storage. Relevant research results were published in "German Applied Chemistry" (Angew. Chem. Int. Ed., 2020, DOI: 10.1002/anie.202012601), and Yao Yunpeng, a doctoral student jointly trained by Fujian Institute of Physics and Shanghai University of Science and Technology, was the first author of the paper . The research work is supported by the key projects of the National Natural Science Foundation of China, the National Outstanding Youth Fund, the original innovation project of the Chinese Academy of Sciences' Basic Frontier Scientific Research Program "From 0 to 1", and the Chinese Academy of Sciences' Strategic Leading Science and Technology Special Project. Box type,Dustproof and noise reduction,Clean and tidy CCSN POWER GENERATION INC.(Engine is a subsidiary of CCSN) , https://www.ccsnengine.com